Fluid handling – With casing – support – protector or static constructional... – Static constructional installations
Patent
1982-05-17
1984-04-24
Chambers, A. Michael
Fluid handling
With casing, support, protector or static constructional...
Static constructional installations
52 20, 52440, 52577, F16L 500, E04B 200
Patent
active
044442211
ABSTRACT:
In a sewer manhole construction having a cylindrical bottom section adapted for placement within the ground at a pre-determined depth and having bottom and side walls, there being spaced inlet and outlet openings in the side wall above the bottom wall adapted to receive the ends of sewer conduits. The improvement which comprises a flooring upon the bottom wall including a plurality of pre-formed filler channel elements of polygonal shape and of uniform height which are mounted upon and around the bottom wall adjacent the side wall. Adjacent inner walls and opposing walls of the filler channel elements define a first channel which underlies and interconnects the inlet and outlet openings. Each channel element has a plurality of upright apertures therethrough. A layer of concrete fills the apertures and interstices between the channel elements and between the channel elements and side wall partly fills the first channel and overlies the channel elements extending the floor above the channel elements. A concave floor channel is formed in the top of the concrete flooring in vertical registry with the first channel and at its ends communicating with the inlet and outlet openings.
REFERENCES:
patent: 1582191 (1926-04-01), Snooke
patent: 4128975 (1978-12-01), Abate
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